Anybody tried new JK BMS with inverter communication support?
- Thread starter wepower
- Start date
According to Off Grid Garage it’s a problem with all versions of firmware. Wonder if it’s a hardware problem.
What I'm tired of is them making all their end-users be the guinea pigs for a device that can potentially cause serious damage and/or kill you. How many bugs has Andy already reported? This latest issue you would have thought would have been one of the first things you'd verify works correctly. It sure would be nice if we had an option for a BMS from a company that actually cares about providing a quality product (hardware, software, documentation, and communication/support wise).
I’ve always seen it as pre-order and to ship on 1/31 since people started discussing it.
There are people on this forum that already have it and I was looking at purchasing it a while ago when it was freely available to order.. just a bit strange they now list it as "pre-order".
Odd. I’ve only seen it that way on Aliexpress. I was debating pre-ordering about 10 days ago but decided on the original JK with 2a balancer.
ArthurEld
Solar Wizard
One advantage of being the guinea pig is that you can shape the future. You can ask for updates that are specific to your needs
I didn't order one because I don't have time. But I love the guys who jump in and make it happen. You guys speed up the process basically for free. I hope the guys working for free get their just reward some day. China is smart to use this free resource.
America would be smart to use it too.
I didn't order one because I don't have time. But I love the guys who jump in and make it happen. You guys speed up the process basically for free. I hope the guys working for free get their just reward some day. China is smart to use this free resource.
America would be smart to use it too.
I am one of the guinea pigs))) Already purchased these new BMS.
This problem wouldn't be as bad if BMS had LiFePo4 factory default settings. Why JK decided to have Li-ion 4.2V default settings is beyond my understanding. I am sure 90+% of battery implementations are LiFePo4. And LiFePo4 settings will not destroy Li-ion battery in case something goes wrong. Really strange decision.
This problem wouldn't be as bad if BMS had LiFePo4 factory default settings. Why JK decided to have Li-ion 4.2V default settings is beyond my understanding. I am sure 90+% of battery implementations are LiFePo4. And LiFePo4 settings will not destroy Li-ion battery in case something goes wrong. Really strange decision.
Quattrohead
Solar Wizard
It doesn't control the charge to individual cells unfortunately, just individual control of balancing circuits.
It's still there. I thought it was issues with connecting to PC software, but it turns it out was the power issues as I noticed the setting reset right away.
I agree. Most can enabled batteries that control interters and mppts have this functionality. I had a REC-ACtive 12v active and it would do this to allow the balancer to do it's job. However with a good and conservative charge voltage, you shouldn't hit OVP and with the balance start voltage set correctly, you should be able to balance no problem during the absorption phase.
I also already have my BMS (two of the 200amp version). If it's a hardware change, dealing with jk for a refund or replacement is probably going to be a challenge. I may be out $250 as I won't put these into production as is. And I just bought an EEL battery box designed for the JK...
hogback
New Member
If it resets to factory, I don't see how it is a safety issue if the charge/discharge being 'off' is factory too.
14.16 firmware has been released:
diysolarforum.com
And of course it has introduced more bugs.
BMS Warning from Andy Off Grid Garage
I really don't know what to do with the newer JK BMSes I purchased. I have the older style which is tried and true. I bought the newer style at the same time as Andy awhile back and I've been scared to hook them up because of things like this. Im sure I'm way out of return period and I'm also...
diysolarforum.com
And of course it has introduced more bugs.
V14.17 is already available via Andy!
drive.google.com
Firmware - Google Drive
drive.google.com
-V14.17 Upgrade logs
1.Fixed a bug where parameters were lost after BMS restart. The bug is caused by a logical error in the parameter entered by the user.
2.Change the default configuration parameters to LPF to improve security.
2.Optimized JKBMS Modbus protocol, added RCV RFV register support. The protocol must use the PC software version V2.5.0。
3.Fixed the Bug that the hardware version may be incorrect in the device information.
4.Add battery low temperature alarm to dry triggers.
-@2024-01-09 by JKBMS
1.Fixed a bug where parameters were lost after BMS restart. The bug is caused by a logical error in the parameter entered by the user.
2.Change the default configuration parameters to LPF to improve security.
2.Optimized JKBMS Modbus protocol, added RCV RFV register support. The protocol must use the PC software version V2.5.0。
3.Fixed the Bug that the hardware version may be incorrect in the device information.
4.Add battery low temperature alarm to dry triggers.
-@2024-01-09 by JKBMS
Steve_S
Offgrid Cabineer, N.E. Ontario, Canada
Similar threads
